JP2010274349A - Rotary cutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary cutter device cutting a sheet member from both directions of the front side and the rear side without changing a conveying mode of the sheet member. <P>SOLUTION: A first rotor and a second rotor facing the first rotor are provided, loading parts of a knife for cutting the sheet member are respectively provided on outer peripheral surface sides of the first rotor and the second rotor, the knife is selectively attached to the first rotor or the second rotor in accordance with the sheet member to be cut, a receiving surface part subjected to hardening treatment for receiving an edge of the knife is provided in a portion facing the edge of the knife on the outer peripheral surface side of either the first rotor or the second rotor, and the sheet material is cut between the edge of the knife and the receiving surface part, and the loading part is constituted of a knife holder attached to the outer peripheral surface side of either the first rotor or the second rotor so as to hold the knife, and the receiving surface part is provided on an end surface of the knife holder. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rotary cutter device in which any sheet member such as paper is cut by a knife assembled to a first rotor and a second rotor facing the first rotor.

  In general, this type of rotary cutter device includes a cylindrical first rotor, a knife attached to the outer peripheral surface of the first rotor in a spiral shape via a knife holder, and a cylindrical shape facing the first rotor. The second rotor is provided.

When the sheet member is cut by the rotary cutter device, the conveyed sheet member is cut by pressing the sheet member against the outer peripheral surface of the second rotor at the blade edge portion of the knife. (See Patent Document 1)
By the way, the hardness of the sheet member cut by the above rotary cutter device may be different between the front side and the back side of the sheet member as in the case where the surface side is coated, for example.

  And when cutting the sheet member having different characteristics such as hardness on the front side and the back side by the rotary cutter device as described above, the blade edge of the knife is entered from the front side of the sheet member or cut from the back side. Depending on whether the sheet is entered and cut, the aesthetic appearance of the cut surface of the sheet is greatly affected. In some cases, the cut surface of the sheet is broken, and the aesthetic appearance is impaired.

  For the above problems, when transporting the sheet member to the rotary cutter device, for example, the front and back surfaces of the sheet member may be changed so as to be reversed, but depending on the process after cutting, the transport If the sheet member to be turned upside down, work in the post-cutting process may not be possible, and if the rotary cutter device and the paper machine are continuously installed in a work line, the sheet member There is a problem that the transfer mode cannot be changed from the middle.

JP-A-11-123694

  The present invention has been developed in view of the above circumstances, and the object is to cut from either the front side or the back side without changing the conveyance mode of the sheet member. It is in providing a rotary cutter device.

  In order to achieve the above object, the invention according to claim 1 is provided with a first rotor and a second rotor facing the first rotor, on the outer peripheral surface side of the first rotor and the second rotor. Is provided with a knife loading portion for cutting the sheet member, and the knife is selectively mounted on the loading portion of either the first rotor or the second rotor in correspondence with the sheet member to be cut. It is characterized by that.

  The invention according to claim 2 is a curing process for receiving the blade edge of the knife at a portion facing the blade edge of the knife on the outer peripheral surface side of the first rotor and the second rotor according to claim 1. The receiving surface part which gave is provided, The sheet | seat member is cut | judged between the blade edge | tip of the said knife, and the said receiving surface part, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, the loading unit according to the first or second aspect includes a knife holder that is attached to the outer peripheral surface side of the first rotor and the second rotor and holds the knife, and the receiving portion A surface portion is provided on an end surface of the knife holder.

The invention according to claim 4 is provided with a first rotor provided with a knife for cutting the sheet member, and a second rotor facing the first rotor, the blade edge of the knife and the outer periphery of the second rotor In the rotary cutter device that cuts the sheet member between the surface,
The arrangement positions of the first rotor and the second rotor with respect to the front and back of the sheet member can be changed.

  According to the first aspect of the present invention, the knife can be selectively mounted on the loading portion of either the first rotor or the second rotor corresponding to the sheet member to be cut. Without changing the conveyance mode of the sheet member, the sheet member can be cut from either the front side or the back side.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, when cutting the sheet member, the sheet member is reliably cut between the blade edge of the knife and the receiving surface portion without any trouble. I can do it.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1 or 2, even if the hardening process by quenching or the like is not performed on the entire outer peripheral surface of the rotor as in the prior art, This only needs to be done on the end face of the knife holder, and the manufacturing cost can be reduced accordingly.

  According to the invention described in claim 4, in correspondence with the sheet member to be cut, only the arrangement position of the first rotor and the second rotor with respect to the front and back of the sheet member is changed, so that the sheet member Even without changing the conveyance mode, the sheet member can be cut from either the front side or the back side.

Schematic explanatory drawing of the sheet cutting machine provided with the rotary cutter apparatus. Schematic explanatory drawing of a rotary cutter apparatus. Sectional drawing of the 1st rotor and 2nd rotor which comprise a rotary cutter apparatus. The expanded sectional view of the principal part of the 1st rotor which comprises a rotary cutter apparatus, and a 2nd rotor. Explanatory drawing which shows another embodiment of a rotary cutter apparatus. Operation | movement explanatory drawing of the rotary cutter apparatus shown in FIG.

  Hereinafter, an embodiment of a rotary cutter device according to the present invention will be described.

  First, FIG. 1 is a schematic explanatory view of a sheet cutter provided with a rotary cutter device of the present invention, FIG. 2 is a schematic explanatory view of a rotary cutter device, and FIG. 3 is a first rotor and a second rotor constituting the rotary cutter device. FIG. 4 is an enlarged cross-sectional view of the main parts of the first rotor and the second rotor.

  1 basically includes a pinch roll device 1 that pulls out a continuous sheet at a constant speed, a slitter device 2 that cuts the width of the continuous sheet P, and a continuous sheet P as a sheet member. Is composed of a feed roll device 3 for aligning the two and a rotary cutter device 4 of the present invention.

  This sheet cutting machine draws a continuous sheet P sent out from a paper machine (not shown) by a pinch roll device 1 and feeds it to a slitter device 2 and also cuts the continuous sheet by the slitter device 2 in the conveying direction. P is fed by the feed roll device 3 and fed to the rotary cutter device 4 and is cut into a predetermined length by the rotary cutter device 4.

  As shown in FIG. 2, the rotary cutter device 4 according to the present invention basically includes a first rotor 5, a second rotor 6 facing the first rotor 5, and the first rotor 5 or the second rotor. A knife 7 attached to the outer peripheral surface of the rotor 6, an electric servo motor 8a as a driving device for rotating the first rotor 5, and an electric servo motor 8b as a driving device for rotating the second rotor 6. And are provided.

  The drive of the servo motor 8 is controlled by a controller (not shown).

  Both the first rotor 5 and the second rotor 6 are provided with cylindrical rotor bodies 51 and 61 and guide rings 52 and 62 assembled on the outer peripheral surfaces of the roller bodies 51 and 61.

  The rotor bodies 51 and 61 are made of, for example, a steel material or a carbon material (carbon fiber reinforced plastic).

  The guide rings 52 and 62 are formed in two parts, and are assembled to the rotor main bodies 51 and 61 so that the outer peripheral surfaces thereof are wrapped from the left and right.

  Further, as shown in FIG. 3, the loading portions 9 of the knife 7 are provided at two locations on the outer peripheral surface side of the rotor main bodies 51 and 61, respectively.

  The loading portion 9 includes a concave groove 91 formed on the outer peripheral surface of the rotor body 51, 61, a pedestal member 93 fixed to the inner bottom portion of the concave groove 91 via a bolt 92, and a bolt on the pedestal member 93 A pair of first and second knife holders 95 and 96 fixed through 94 are provided.

  The knife 7 is interposed between the pair of first and second knife holders 95 and 96 fixed to the base member 93.

  The concave groove 91 extends over the entire length in the longitudinal direction of the rotor main bodies 51 and 61, and the base member 93 and the first and second knife holders 95 and 96 also extend over the entire length in the longitudinal direction of the rotor main bodies 51 and 61.

  Further, a fitting groove 97 is formed on the surface of the second knife holder 96 facing the first knife holder 95, and a magnet 98 is incorporated in the fitting groove 97, so that the first and the second The knife 7 interposed between the knife holders 95 and 96 is attracted to the magnet 98.

  The front end surface of the first knife holder 95 is a receiving surface portion 99 for receiving the cutting edge of the knife 7 described above.

  The receiving surface 99 is previously subjected to a hardening process by quenching.

  Further, the front end surface of the base member 93 on which the knife holders 95 and 96 are placed is preliminarily hardened by quenching.

  Note that it is preferable that the surface of the fitting portion of the base member 93 with the first knife holder 95 and the second knife holder 96 is subjected to a hardening process by quenching in advance.

  In the above embodiment, the first rotor 5 and the second rotor 6 have the same structure and the same size.

  In the rotary cutter device 4 having the above structure, the knife 7 is set on the first rotor 5 according to the conveying mode of the continuous sheet P before cutting the continuous sheet P, or for example, as shown in FIG. Thus, the second rotor 6 is set.

  Specifically, the knife 7 is interposed between the knife holders 95 and 96 and is attracted to the magnet 98 assembled to the second knife holder 96, and the lower end of the knife 7 is attached to the front end surface of the base member 93. It is set by making it abut against.

  When the continuous sheet P is cut by the above rotary cutter device 4, when the knife 7 is set on the second rotor 6 as shown in FIG. When the knife 7 is set on the first rotor 5, the conveyed continuous sheet P is a so-called top cut, and the knife 5 is appropriately connected to the first rotor 5 or the first rotor 5 according to the conveying mode of the continuous sheet P. By setting the two rotors, the continuous sheet P is accurately cut by the knife 5.

  Therefore, in the above rotary cutter device 4, it is possible to solve the problem that the cut surface is broken and the aesthetic appearance is impaired as in the conventional case.

  By the way, in the above rotary cutter device 4, when cutting the continuous sheet P, the load when the blade of the knife 7 bites into the sheet P becomes large, and the rotation of the rotors 5 and 6 tends to be slightly delayed. In the embodiment, the torque of the servo motors 8a and 8b directly connected to the rotors 5 and 6 is increased at the position where the blade of the knife 7 bites into the sheet P.

  Accordingly, there is no delay in cutting the knife 7, and a stable cutting operation is performed.

  In particular, in the case of cutting the sheet P by cutting the bottom surface, the sheet P cut by the blade edge at the time of cutting is wound around the rotors 5 and 6 to cause jamming. Therefore, in the embodiment, the servo motors 8a and 8b are controlled. Thus, the rotational speed of the rotors 5 and 6 immediately after cutting is made faster than the conveying speed of the continuous sheet P so that the blade tip of the knife 7 is quickly separated from the continuous sheet P (so-called blade clearance).

  Therefore, this is particularly effective when cutting a sheet member having an adhesive layer on one side, for example.

Thus, in the above rotary cutter device 4, for example, the knife 7 is attached to the first rotor 5 side in accordance with the conveyance mode of the continuous sheet P being conveyed, and the blade edge of the knife 7 from the upper surface side of the continuous sheet P Can be selected as a so-called top surface cutting, or a so-called bottom surface cutting in which the knife 7 is attached to the second rotor 6 side and the blade edge of the knife 7 is inserted from the bottom surface side of the continuous sheet P can be selected. Thus, it is possible to easily cut from either the front side or the back side without changing the conveyance mode of the sheet member. In the above embodiments, the outer peripheral surface side of the first rotor 5 and the second rotor 6 In order to selectively attach the knife 7 to either the first rotor 5 or the second rotor 6 in accordance with the sheet member to be cut. However, for example, when the rotary cutter device is small, as shown schematically in FIGS. 5 and 6, the first rotor 50 provided with the knife 7 for cutting the sheet member, and the first rotor 50, a second rotor 60 facing the sheet 50, and cutting the sheet member between the cutting edge of the knife 7 and the outer peripheral surface of the second rotor 60, and the first rotor 50 with respect to the front and back of the sheet member; The arrangement position of the second rotor 60 may be changed.

  That is, a first rotor 50 provided with a knife 7 for cutting a sheet member and a second rotor 60 opposed to the first rotor, and a gap between the blade edge of the knife and the outer peripheral surface of the second rotor. In the conventional rotary cutter device that cuts the sheet member at the both ends of the first rotor 50 and the second rotor 60 in the longitudinal direction are respectively supported by the connecting body 40, and the connecting body 40 is connected to the rotary cutter apparatus. The base body 41 is attached to the base body 41 so as to be able to rotate forward and reversely. By rotating the connecting body 40 forward or backward, both the two on the straight line connecting the rotation centers of the rotors 50 and 60 and the intersection of the straight line and the sheet member. As shown in (A) or (B) of FIG. 6 by revolving the rotors 50 and 60, the arrangement positions of the first rotor 50 and the second rotor 60 with respect to the front and back of the sheet member It may be changed.

  In this case, the drive control by the servomotor necessary for adjusting the drive torque and the rotation angle is only required for the first rotor 50 provided with the knife 7.

4 Rotary cutter device 5 First rotor 50 Rotor main body 6 Second rotor 60 Rotor main body 7 Knife 8a and 8b Servo motor 9 Loading section 91 Concave groove 93 Base member 95 First knife holder 96 Second knife holder 97 Fitting groove 98 Magnet 99 Receiving surface part P Continuous sheet (sheet member)

Claims (4)

  A first rotor and a second rotor facing the first rotor are provided, and a loading portion of a knife for cutting a sheet member is provided on each of the outer peripheral surfaces of the first rotor and the second rotor. A rotary cutter device, wherein the knife is selectively attached to the loading portion of either the first rotor or the second rotor corresponding to the sheet member to be performed.   On the outer peripheral surface side of the first rotor and the second rotor, a portion facing the blade edge of the knife is provided with a receiving surface portion subjected to a curing process for receiving the blade edge of the knife, and the blade edge of the knife The rotary cutter device according to claim 1, wherein a sheet member is cut between the receiving surface portion.   The loading portion is configured by a knife holder that is attached to the outer peripheral surface side of the first rotor and the second rotor and holds the knife, and the receiving surface portion is provided on an end surface of the knife holder. The rotary cutter device according to claim 1 or 2. A first rotor provided with a knife for cutting the sheet member and a second rotor facing the first rotor are provided, and the sheet member is cut between the blade edge of the knife and the outer peripheral surface of the second rotor. In the rotary cutter device
The rotary cutter device characterized in that the arrangement positions of the first rotor and the second rotor relative to the front and back of the sheet member can be changed.

Images